Wrench.



No. 64l,782. Patented Jan. 23,1900.

r. KosTLAu WRENCH.

(Applicatiozi filed Feb. 24, 1699. t

(No Model.)

"ilillllllllll THE NORRIS PETERS 00., Moro-Luna WASHINGTOM B. Q

NITED STATES ATENT OFFICE.

FRANK KosTi1AN, oF TRAER, IowA'.

WRENCH.

SPECIFICATION forming part Of Letters Patent NO. 641,782, dated January 23, 190.0.

Application filed February 24,1899. Serial No. 706,746. (No model.)

wrench adapted to turn nuts in inconvenient places inaccessible by an ordinary wrench and with the operator at the opposite or head end of the bolt.

The essential features of the invention will fully appear in the description and claim following, reference being had to the accompanying drawings, in which Figure 1 is a side view of a wrench embodying my invention as in use. Fig. 2 is a back view of the same as regards the operator. Fig. 3 is a longitudinal section of the same central and vertical to Fig. 2. V

This wrench has been designed for use more especially in connection with grain-separator cylinders, though applicable to many other uses. In tightening the nuts on the studs of separator-teeth the monkey-wrench or other wrenches in common use are found to be very inconvenient, sincethe nuts are inside the (and at the ends through the rings as well) project the shanks of the teeth 0 O, screwthreaded and provided with nuts D. The wrench-socket, which fits one of these nuts, is a gear E, withasquare central hole and circulars idebearingsEQfitting correspondingholes F in retaining-plates F. These plates extend upwardly and are provided with bearing-holes F to take the bearings G of a pinion G, meshin g with the gear. The bearing-plates are held apart a suitable distance by lugs E through which pass rivets E as shown. One bearing of the pinion is extended and forms a shank G to which is secured, as by a pin H, a T-shaped-hand-lever I. This is prefer ably tubular for lightness and in practice is made of gas-pipe and a T-coupling, as shown.

It will be observed that in the operation of the wrench the operator is at the end of the bolt, (tooth, stud, or whateverit may be;) but the movement of the wrenchth at is to say, of the handlever-is the same as in the use of an ordinary wrench-to the right to tighten and vice versa to loosen the nuts. This is due to the gearing of the parts, of course, a feature which also admits of the socket being placed behind an interposed bar or the like, as is necessary under circumstances such as are referred to and indicated in the drawings.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The described wrench, comprising the gear E with a straight rectangular hole therein adapted to fit the nut of a thresher-cylinder tooth, and provided with short cylindrical journals concentric with said hole, the pinion G meshin g therewith, and having similarj ournals at each side, and ashank for the attachment of ahandle, the bearing-platesFF,having flat external faces and inwardly-projecting lugs E connecting rivets or studs E and the T-lever I secured to the shank of the pinion.

. In testimony whereof I affix my signature in presence of two witnesses.

FRANK KOSTLAN.

Witnesses:

E. O. ELLIsoN, M. E. CHAMBERLAIN. 

